[TxMt] Setting theme in .tm_properties

Is it possible to set the default theme for a given folder by setting the .tm_properties file? I know I've seen reference to it but I also think I remember hearing that this wasn't implemented yet. I'm VERY interested in either:

- Per directory defaulting of Theme (via above .tm_properties or any other method) - Per grammer/language defaulting of Theme

If these features aren't currently available I'd like to put my vote in for them ... they seems quite generally applicable to the populations use-cases and I would imagine (speaking completely out of school) them to not be terribly hard to implement? Here's me hoping anyway.

Ken